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BÀI TẬP TRẮC NGIỆM TIẾNG ANH MÔN HỆ ĐIỀU HÀNH LINUX_3

122.Which two programs will allow you to change the priority of a program already running? (Choose two) A. top B. nice C. niceit D. renice E. chnice Answer: B, D | BÀI TẬP TRẮC NGIỆM TIẾNG ANH MÔN HỆ ĐIỀU HÀNH LINUX- TRƯỜNG CD CÔNG NGỆ THÔNG TIN Chuyên ngành Công nghệ phần mềm Năm học 2010-2011 122. Which two programs will allow you to change the priority of a program already running Choose two A. top B. nice C. niceit D. renice E. chnice Answer B D 123. Which command removes all subdirectories in tmp regardless of whether they are non-existent or in use A. del tmp B. m -rf tmp C. rm -Ra tmp D. rm -rf tmp E. delete tmp Answer D 124.What utility would use to remove display columns from each line of a file A. pwd B. col C. cut D. tail E. extract Answer C 125.If you set the umask to 022 by default what permissions will your files have A. 0220 B. 0557 C. 0644 D. 0755 Answer C 126.Which of the following commands may be used to view PCI devices seen by the Linux kernel Choose two A. less lspci B. less dev pci C. less proc pci D. less proc devices pci E. lspci less Answer C E 127. You have the following file -rwxrwxr-x 1 foo root 0 Feb 23 07 48 bin foo Which of the following commands will change the owner of the file bin foo from the foo user to the bar user without affecting group ownership A. chown bin foo bar B. chown bar bin foo C. chown bar.foo bin foo D. chown.foo.bar bin foo Answer C 128. Your machine has two working NIC s with proper addresses. You want to split your network into two new subnets. What single command will accomplish this A. ifconfig B. route C. default D. netstat E. None of the choices Answer A 129. What command will set a regular users password to force changing it every 60 days Choose all that apply. A. passwd -x 60 user1 B. chage -M 60 user1 C. passwd x 60 .